Cermet alloy

Abstract

This invention provides a cermet alloy having a structure comprising a hard phase and a bonding phase, wherein the hard phase comprising carbide particles rich An TiC, those rich in WC and (Ti, W, MO)C or (Ti, W, Mo)(C, N) and the bonding phase comprising at least one of Co and Ni. Mo contents in the bonding phase satisfies the conditions: 1.0≦Mo (wt %)/Ti (wt %) and 6 (wt %)≦Ti+Mo. The cermet alloy has superior hardness and toughness as well as improved heat resistance and is applicable as a material for a wet machining tool.

What is claimed is: 
     
       1. A cermet alloy having a structure comprising 60 to 90 wt. % of a hard phase and 10 to 40 wt. % of a bonding phase, said hard phase comprising titanium carbide and titanium nitride or titanium carbide-nitride, and said bonding phase mainly comprising at least one of Co and Ni, and further comprising Ti and Mo, wherein the Ti and Mo contents in the bonding phase satisfy the following conditions: 1.0≦Mo (wt. %)/Ti (wt. %) and 6 (wt. %)≦Ti+Mo. 
     
     
       2. The cermet alloy according to claim 1, wherein the hard phase comprises carbide particles rich in TiC, those rich in WC as well as (Ti, W, Mo) C. 
     
     
       3. A cermet alloy having a structure comprising 60 to 90 wt. % of a hard phase and 10 to 40 wt. % of a bonding phase, said hard phase comprising titanium carbide and titanium nitride or titanium carbide-nitride, said bonding phase comprising at least one of Co and Ni and further comprising Ti, Mo and W, wherein the Ti, Mo and W contents in the bonding phase satisfy the following conditions: 1.0≦Mo (wt. %)/Ti (wt. %) and 7 (wt. %)≦Ti+Mo+W.